1 files changed, 13 insertions, 2 deletions
diff --git a/actionpack/lib/action_controller/integration.rb b/actionpack/lib/action_controller/integration.rb
index 163ba84a3e..a0e894108d 100644
--- a/actionpack/lib/action_controller/integration.rb
+++ b/actionpack/lib/action_controller/integration.rb
@@ -26,6 +26,9 @@ module ActionController
       # The status message that accompanied the status code of the last request.
       attr_reader :status_message
 
+      # The body of the last request.
+      attr_reader :body
+
       # The URI of the last request.
       attr_reader :path
 
@@ -308,7 +311,11 @@ module ActionController
 
           ActionController::Base.clear_last_instantiation!
 
-          app = Rack::Lint.new(@application)
+          app = @application
+          # Rack::Lint doesn't accept String headers or bodies in Ruby 1.9
+          unless RUBY_VERSION >= '1.9.0' && Rack.release <= '0.9.0'
+            app = Rack::Lint.new(app)
+          end
 
           status, headers, body = app.call(env)
           @request_count += 1
@@ -326,7 +333,11 @@ module ActionController
           end
 
           @body = ""
-          body.each { |part| @body << part }
+          if body.is_a?(String)
+            @body << body
+          else
+            body.each { |part| @body << part }
+          end
 
           if @controller = ActionController::Base.last_instantiation
             @request = @controller.request